Flex stiffness
[化] 耐屈挠疲劳
🧩 词语组成解析
flex
[fleks]
v. 弯曲（关节）;收缩（肌肉）;显示力量;
n. 弯曲;[电]花线;
🗣️ 情景例句
Sir, this offer will expire this week.
先生，这次特价这个礼拜就结束了。
May I accompany you tonight?
今晚我可以和你在一起吗？
Well, it's certainly not for me!
噢，当然不会给我的！